Riverside Geyser in the Upper Geyser Basin is the most regular of Yellowstone's geysers. About every six hours it ejects a 25-m-high inclined jet from a small vent hole on the east bank of the Firehole River 2 km downstream from Old Faithful.

Photo by Lee Siebert, 1968 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Galleries: Geothermal Features

Keywords: geothermal | geyser

Yellowstone